Locking device for window screens



Jan. 13, 1931. e. BODEN LOCKING DEVICE FOR WINDOW SCREENS Filed Jan. 21, 1930 l fflneaiisq I I I It" 18 21 fnrth'ei ob ect 'ofthe i nventlon toprovide a locking means for screens er-Ethe i I w e with; the present invention. v

I Beferring to thedrawings -th'e inventlon is exemplified w l'th a= screen end the i screen Patented Jan 13, il 9 31 V n f' This invention relates-t0 extension 01 e x '1qansib1e window" screens, -ve1 'til2iters,f and analogonssextensienand expansible articles;

' It is an object of the invention to provide 5 locking" means for 1 preventing movement of,

tithe screen 01'- nthe'rsections froin their ad? j-uste'd r predetermined ipe'si-tien.

V m ake p fevisien for the reie fth leaking 'flike whiehfis positijie" inffaetielnfsiniple in f eoiistxntioni 'itndiieliable in service and op .eration, i 1

" fiqns; details of Construction fland 'arrange-r meets Of parts Which-hvilh first" be-"describedin connection-with the ztcee'nn'p' zn ying drewingand; then inere-"particnlei-ly piji-nted i'ont -InIthe'dm-Wings I e -Fi'gure 1' is a perspectiveviemiwlthgpants tien- 'appl ied thereto Q I i Figu1fe 2 iselongitudinal-seetionlinitlireo lF-"ignre is a similar "sectionel yiew shewma nual release of the leelnng means Figu-re 4%;1s n "cross seetion sis- 011; hne;4{4

illustrated as en example, comprises 1.; two wojo'den fr'eme sectlonst *One'{sect enywhlch nm'y be termed theginn'ei seetien,- comprises 1' 'a top bar Ur -moulding end--21; bqttem" ban 6 I *co'nneet'd at; one end; been; sttipT, ligTherether 's eetion vhieh may be termed the ionter.

zind endapiejc'esf S ffi; end T the rover- Suitahly seeured i theframeaife' screens minuteiel; At

59? the: seneen's'=hWefinishing strips 1051111 5 Ex.-

It is-another object I of theinventien tn 1 e I fWith these generaiObjectsiinviewg thein;j -vent1on 'c0ns1stsf in the features, gconib na-i path 0f thei iether 'g sectient to 510e, nrge mat-wally lintnjnleeking engagement .W

Wire mesh '01; other snitable' the*0pe11 ends of the: frame,

=t're1ne'0penipesitionof the. screen: is. fixeclby the l mntual engagement [of these finishing t 'ips, :Extrenie closed pesition is 'fixled by; the e'I gagernent pf the: top and; bottom bars of one frame section with the :end': stripi of the; oth'ennsitidP end strips being thickenthan the other.striiiisiteiprovidestopgshoulders. r

in-a the construction illustrated, th e jtwo frame-sections hziveleompl'ementary greeves for receiving individual bearing elements;

lhefinner sectionhaslone ,orflmoteebearinfiff elementgslideblein-thegro ove of thei' o ut er section; andwtheonter; seetion has one er I; 1 bearing elements slidahle; inthe greoire in my pending application; SerialfNdifi 339,-

" 'lfheiinvention in ,its entirety locking l element ilslitlably disposed l i the,

greovemf' onez'sefction, and extending: in the t first section upon tendency Q f snid ;,s ejet ens to indve ii'elative ly; in one direction. Iln 'zt his embodiinent, theelecking elelnent actsjto preventmovementgo-fthescreensections siiehes 'to decreasefathe effective: screen areei thOHghmepebIenf variousfconstrn'ctien that here: shown as :an example, the-locking ele ent istilteble end'previdedwith teeth fbl embedding in i one section. As shown, said' i 5 element is (if m eta'l'and comprises a. flzitfoet l5fs1idable in the dovetail greeye of one seckf Y v tion'a-ndfitting' in theundercnt sides thereof, ,e said. feet being free afgi sliding no ementin saidgrooye bnt wide enough notite 'fall duh, wlhis fbothas; iniefiect, a sliding tenenend e ens- 7' I element further in1nctesl.-:aj eeting pair 1 1 plied to extension articles to prevent expand.

7 .ing a heel. The projecting part is narrowed along its sides relative to the "foot so as to be accommodatediin the narrow portion of the groove. As shown, a strengthening -r1b 18 extend across the corner between'the foot and projecting'part.

part and toward the positioned. in the groove of the groove.

In this practical errempliiication, the-Pro- 'jecting part 16 1s, oblique defines the obtuse angle therewith. Thelock ing element isarranged in-a groove of one screen sect on beyond the rear end of the er section'and with g j part'slanting toward said rear end. :Tendency'of the sections to move relatively-1n a manner to decrease the 'eflectivescree'n areaoth- - causes said rear end toact on the pro ecting gagexnent with the first screen section. The

oblique part andto tilt; the

whereby the teeth are' .embedded inlfixed enlocking element, bein thus fixed, prevents such movement of the sections, the pro ectingpart acting asa stop.

/ leased position so'tha-t the-screen sections may be moved 'to decrease-the QfiCtlV6: screen,

' foot and overlaps the rear end 7 tion, the'teeth may gagement and projecting part.

' embedded teeth Provision is made for releasing the locking element wherebyit may be held in its re- This is acoomplished in the present projecting oblique part. vAs here sl1own, th1s oft-set extends from the pro ecting oblique part in a direction generally opposite to the ot thecomplescreen section when'engaging said The 'jotl-setgmayqbe depressed by the thumb or finger .(F1gure: 3) to tilt the locking element Zl'llCl;X{ltl1tlltW the from the lock ng engagement. By maintaining such depressed cond I I he held out oi lockingenmentary ,osition. I F The locking element may be employed, for

example, on the inside of an extension screen to ma1nta1n a" predetermined ad ustment oi the screen and to prevent openingthereot 'ing or contracting movement oat-sections or both.

#trom the inside.

from the outside. whilepermitting release I 7 These elements may. be ap- ,sVhatis claimed; is:-

' disposed in a groove otonejsection and extending in the path of another section to be The free endiof the foot has teeth19- directed generally..oppo-..

,sitely to the projecting v I h 7 section, in the. groove ofwhich said Clot [1S I Y i The locking element lsmserted by sliding the foot in at theend g tending obliquely from the foot and having to the foot 15' and the projecting -,oblique locking element,

manually;

the screen sections slid freely in either direction and ad usted to a desired ,7

i I y 7' jectingcpart 2. Thecombination with relatively movable-sections, of'a tiltable locking element having a foot slidably disposed in undercut sides of a groove of one section and having a having 'a'jootslidably disposed in'-' undercut sides ofa'groove of'one section, apart proecting 1n the path of another section and exan obtuse angular connection with the foot at i 4; The combination with relatively movable sections, of a locking element slidably disposed in-a: groove of one section and extendinginithe path ofanother section to be urged littllgOlllfltlCitlly thereby into 7 locking engagement with the first section, said locking element having'mean s for effecting its release 5. The combination jwith relatively movfable sections, of a :tiltable locking element having a foot slidably disposed in undercut sides oiia groove of one section and having a partprojecting in the path of anothersection,

said foot having means for locking engage- Inent with'the first section, and an off-set on thefreejend of the projecting part for effecting manual releaseof the locking engagement.

6. The combination with relatively movable sections, of a tiltable locking element having afootslidably disposed in undercut sides of a groove of one section,a part proecting in the path 0t another section and extending obliquely from the foot iand-having an obtuse angular connection with; the foot at one-end thereof, the locking element being arranged so that the projectingpart;slants-towardsaid other s'ection,fa nd teeth at the free end or the foot directed toward the first section, .and anofi-set'on the free end of the profor tiltingthe locking element manually.";fl V

.7, tiltable metallic lockingelement comprising afoot having teeth atone end and a part projecting from the other .end :of said -foot 1n a general direction opposite to the :teeth, saidpro ecting part having an obtuse angular connection withithe foot.

. 8. A tiltable metallic locking element comprising a foot having teethat: onejendand {a partpro ecting fromthe other .end of said foot .in ageneral direction opposite tothe' teeth, said pro ecting part having an; obtuse angular. connection with the foot, and an offset on the free endof; the proj cti Part, urged automatically thereby into loclnng engagement with the first section.

. ,9. A tiltable metallic locking element com:

.1'prising'. 'a foothaving' teeth at one end and a V was foot in a general direction oppositeto the a teethQsaid projecting part havinggan obtuse angular connection with the 'foot, and an olfset on the free end of the projecting part, said "off-set extending from the projecting part in anobtuse angular connection with the foot at one end thereof, the locking element being arranged so that the projecting part slants toward said other section; and teeth at the free a direction generally opposite to the foot.

10. The combination with relativelymov- I j able sections, of a. tilta'ble locking element g having a 'foot slidably disposed in undercut sides of a groove of one section,fa part prof jecting in the path ofanother section, and extending obliquely from the foot and having end of the foot directedtoward the first section, andanoif-set on the free end of the project ing'part for'tiltingthe locking element manually, said ofl setextending-fro'm the project.-

ing'partin a direction to overlap said other 1 I i section when engaging the projectingpart.

'11." The combination with relatively 'mov-f v able section's,'of a loose', freely tiltable loclz- 7 1 ing element 'capacitated to be tilted automati- V 1 cally by one section into locking engagement H with another section. v

12. A freely tiltable locking element hit;

ing a foot withlocking teeth anda part projectmg fromsaid foot for tilting the foot and acting as a stop; i

"In test mony whereof, I have hereunto set my hand; I

GEORGE BODEN. 1. 

